Natural Male Growth
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Penis Size and Length

Erect penis length
The average erect penis length is 5.877 inches (14.928 cm).
Standard deviation is 0.825 inches (2.096 cm) with
54 percent of the effective sample measuring between 5.5 inches (14 cm) and 6.3 inches (16 cm).


Erect penis girth
The average erect penis girth is 4.972 inches (12.63 cm).
Standard deviation is 0.508 inches (1.29 cm) or with 53.33 percent of the effective sample
measuring between 4.525 inches (11.5 cm) and 5.118 inches (13 cm).